C# 如何在中继器内设置动态按钮/I始终获得相同的值

在我制作的网站主页上，我使用repeater和eval从数据库中提取产品，如下所示：

<div class="col-md-12 grid-gallery overflow-hidden">
    <div class="tab-content">
        <ul class="grid masonry-items">
            <asp:Repeater ID="RptrProductInfo" runat="server" DataSourceID="SqlDtSourceProductInfo">
                <ItemTemplate>
                    <li class="<%#Eval("productcategory") %>">
                        <figure>
                            <div class="gallery-img"><asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click"><img src="<%#Eval("prouctimage") %>" alt="" /></asp:LinkButton></div>
                            <figcaption>
                                <asp:Label ID="LblProductID" runat="server" Text='<%#Eval("productid") %>'></asp:Label>
                                <h3><%#Eval("productname") %></h3>
                                <p>Ürün hakkında detaylı bilgi için tıklayınız.</p>
                            </figcaption>
                        </figure>
                    </li>
                </ItemTemplate>
            </asp:Repeater>
            <asp:SqlDataSource ID="SqlDtSourceProductInfo" runat="server" ConnectionString="<%$ ConnectionStrings:aytasarimConnectionString %>" SelectCommand="SELECT [productid], [productname], [productcategory], [productimage] FROM [product]"></asp:SqlDataSource>
        </ul>
    </div>
</div>

protected void LinkButton1_Click(object sender, EventArgs e)
{
    foreach (RepeaterItem item in RptrProductInfo.Items)
    {
        Label lblName = (Label)item.FindControl("LblProductID");
        if (lblName != null)
        {
            string mesaj = "";
            DataRow drLogin = function.GetDataRow("SELECT productid FROM product WHERE productid='" + lblName.Text + "'");
            if(drLogin == null)
            {
                mesaj = "<script>alert('Error!');</script>";
                Response.Write(mesaj);
            }
            else
            {
                Session["productid"] = drLogin["productid"].ToString();
                Response.Redirect("product.aspx");
            }
        }
    }
}

Stok Durumu:

在我看来，您正在使用大量不必要的代码。从标签中以字符串形式获取产品ID，然后在循环中继器时执行数据库查询以获取相同的ID

如果我是你，我会使用

OnCommand

而不是

OnClick

，并将正确的ID作为

CommandArgument

发送

因此，在aspx中，将LinkButton更改为

<asp:LinkButton ID="LinkButton1" runat="server" OnCommand="LinkButton1_Command"
   CommandArgument='<%# Eval("productid") %>'>LinkButton</asp:LinkButton>

<asp:LinkButton ID="LinkButton1" runat="server" OnCommand="LinkButton1_Command"
   CommandArgument='<%# Eval("productid") %>'>LinkButton</asp:LinkButton>

protected void LinkButton1_Command(object sender, CommandEventArgs e)
{
    Session["productid"] = e.CommandArgument.ToString();
    Response.Redirect("product.aspx");
}